. Assume that in a diploid, sexually reproducing population with random mating w
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. Assume that in a diploid, sexually reproducing population with random mating we have a locus with two alleles, Ai and A2. Assume that the Aj allele produces high trait values and the A2allele produces low trait values, such that genotype AIAI produces a trait value of 10, genotype A A2 produces a trait value of 5, and genotype A2A2 produces a trait value of 0. Assume further that fitness is highest when the trait value- 5, and decreases symmetrically for either higher or lower trait values such that: Fitness for an individual with trait value 10 = 0.2 Fitness for an individual with trait value 5 = 1.0 Fitness for an individual with trait value 0 0.2 (A) Assume that the initial frequency of the A allele is 0.99, and the initial frequency of the A2allele is 0.01. Will natural selection work more effectively (producing a population with a higher average reproductive success) if we can magically' make inheritance operate through (i) a blending or (ii) a particulate mode of inheritance? Explain your answer briefly. (B) Now, assume instead that the initial frequencies are: freq(A)-0.5 and freq A,)-0.5. If we can again 'magically' make inheritance operate through (i) a blending or (ii) a particulate mode of inheritance, which will yield a population with the highest average fitness? Explain your answer brieflyExplanation / Answer
As we know fitness is an ability of an organism to survive and reproduce well. Fitness defines reproductive success that is more fitness depicts more reproductive success.
According to Mendel, blending theory of inheritance does not give reproductive success all the time, that is it does not provide fitness.
Blending theory of inheritance states that the characteristics of offsrings are mixtures of the characteristics of their parents. So, offsprings character will be intermediate of the parents.
While particulate mode of inheritance which was discovered by Mendel too, states that the phenotypic characters are passed from generation to generation as separate entities. With time it gives variation which has the maximum survival.
Thus, in both the cases, particulate mode of inheritance will have better results and more reproductive success that is more fitness.
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